David jbwett



D. JEWETT. GAR AXLE B0X N10. 78,210. Patented Mayz, 1888.

8f. f Q/f MMM DAVID JEWETT, or LYNN, MASSAGHUSETTS, ASSIGNOR To HIM'SELF AND ALBERT LEAGH, OFSAME PLACE;

Leim Patent No. 78,210, and May. 2e, 185s.

IMPROVED AXLE-BQX 4FOB. RAILROAD-(iAItS.V

f TO ALL -WHOM IT MAY CONCERN; Be it known thatI, Dsvm JEwn'rrof Lynn, in the county of Essex, and State o f Massachusetts, have invented en Improved Journal or Axle-Box for Railroad-Cars, Carriages, Shefting, Ste., of which the following is a full, cieur,vand exact description, retlerence being had 'to the accompanying drawings, making part of this speeieation, in which-- l Figure 1 is an end elevation ot' a journal-box, having my improvements applied thereto, the' cap-plate at this and being removed to show the interior construction. i M

Figure 2 is a longitudinal section through the centre of my inprovedjour'nal-box.-

Figure 8 is e view of one of the cap-plates detached. i

Figure' is au View of the journal. l l i My invention consists in a journal or `axle-box, provided-with a series' of -spherical balls, which are placed in e circular recess or chamber, and revolve in contact with-the journal or axle, thereby reducing the friction to a great extent, audpentirely yavoidingthe necessity o f employing oil or'other lubricating-material To enable othersskilled'i'n the art to understand and use my invention, Iwill proceed to describe the manner 'm wliich'I have cdrried it out. Y s

n In the said drawings, represents the journal-hex of n railroad-ear, which isof a rectangular form, and is bored out at the centre for the reception of the journal B.

Within eaehcnd of the box, A, is formed an annular recess, a, which is rounded or curved, as seen in the, drawings, and when .covered by aplnte -or cap,1,providedv with asimilar ."lfcccss, 5, forms a chamber for the, `reception of a series 'ci' spherical halls, D, ieomposedf steel 'or other suitable` material, which revolve in oo ntae'trwith the journaiB, and the interior surface of the chamber, a portion of euch ball resting inafgroove, b, in the jdnnncl B, the curvature of the groove corresponding tothat ot'ithe balls D;

The join-nal, B, i's thus caused to hear directly upon the balls D, .and is supportedV thereby stench end of the bos'gA,`. witho ut coming: into immediate 'eontaetwith 4its interior surface, by which mean-s the friction i; ed/MMM@ greet extent, so that a cor or carriage may bo moved with great ease, und with much less power than where 'therdirf'ary journal-box -is employed, while no 'oil or-other lubricating-material is required, thus ci'ieciting a great snvingan`d rendering it easy to keep the parts clean `and free from dirt.

,Therap-plates,- Gfvnje secured i'nplnee by means of screws, e, and are each provided'with a ange 'erprojeiction, ,iwhielriits into the recess a. Instead of 'the screw e, however, the flange dm'ay be provided'with a. i screw-tbread,v it'tingin't'o a. corresponding screw-thread on the inner surface of, the recess a.

Tbeouterfend oflthejournal, 'Bf, -revolves in a circular cavity, 6, in'the'outer plate', C, and passes entirely .through the opposite plate,a collar, E, of rubber, or, other suitable material, serving-to exclude the dirt and dust from the interior of the box A, and the ordinary metal collar at this point being dispensed with.'

The n xielor journal, B, is"l 1 eid in place,rwithn the box A, by means o f the balls' D, which, es before stated, titfintetii'e 'grooves o, and prevent it from being witlnlrawn until they are removed from' their chambers, thus dispensing wi ti 1the;ordinary screw-nut, or other device, at'present used foi this purpose. 4

Inthcoregong description, I have spoken of two chambers, each containing a seriesof spherical balls, bnf; itis 'evident that t-hfeljournal may rest on a single serie-sV of balls, or on'more than twoseries, if preferred.

.My invention, my -beapplied to journal-boxes' for' machine-shuttingus well as to those for 4railrom-cars, and also tothe axle-boxes of 'carriagewheela without departing from the spirit of my invention. b

I am aware'tliatgcar-axlc boxes have been provided with spherical balls revolving in vf, groove formed in a.. sleeve which-is keyed tothe shaft, and. hence I disclaim the arrangement es found in the patent of Joel Wehster, datedfJun' 18,1861. I avoid altogether the use'oi` the sleeve, which thus simplifies and cheapens the 'agloboxeu and to secure a steady motion I use a double set of the spherical balls in each box.

l O'lam.

"'Whetl claim', and desire to secure by Letters Patent, is-

The construction and Varrangement of an axle-box, when composed of the parts C C, A A, and combined with the rollers D D and grooved axle B, in theA manner and for the purpose herein described.

DAVID JliWiliYl?.

Witnesses: i I. E. Tssennnscnnn, k N. W. Srninns. 

